Differential gearing.



No. 736,421i PATENTED JUNE 9., 1903,

H, L. WARNER.

DIFFERENTIAL GARING. APPLIGATION Hmm 2391;1902.

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' No. 730,421. v v f ATENTED JUNE 9, 1903.

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'some instances two and y'NITED STATES, PATENT `ZEatented Tune 9, 1903.

OFFICE.

nUenL. WARNER, OE DAYTON, OHIO, AssieNoR To 'ri-1E nAYroN MOTOR VEHICLE OO., O F DAYTON, OHIO, A CORPORATION OF WEST VIRGINIA.

DlFFx-:EN-HAL elaAmN'e'.

srEcIFrcA'rIoNffomning pars of Leners raient No.. veo-,421, dared June 9,1903.

Application liled April?, 1902. Serial No. 101,759. (No model.)

. To @ZZ ttf/71.0770 it may concern:

Be it known that I, HUGE L. WARNER, a

citizen of the United States, residing at Day-l such as will enable others skilled in the art` 'to which it appertains to make and use the same, reference being had to the'accom panyl ing drawings, and to the iigures of reference marked thereon, which form a part of this specification.

This invention relates to improvements in gearing of the type known as differential orrcompensating7 gearing. As Iam engaged in the manufacture of automobile parts and supplies, I have calls for and find the need of an equalizing gearing having in sometimes three sprockets or driving-wheels, and sometimes "these sprockets must vary in size, so as to give different speeds to the driven shaft, and

thus avoid what is known as a variable- Speed transmission, which is costly and -changeable with the other side of the gearing. This can be done after the gearing has been secured to the driving-shafts. have provided for, so as to avoid disturbing the mechanism as awhole, bya simple interchange of side plates, and, further, to provide a gearing that is compact, low in cost, self-contained, perfect in alinement, and practically dust-proof.

With this object in view the invention consists in the combination and arrangement of parts, as hereinafter set forth and described.

ReferringY to the accompanying drawings, which fully illustrate myinvention, Figure 1 is a face view of'iny-imprved differential gear, part of which Yis bokenjaway. Fig. 2 is a cross-sectional view of 'Fig-'1 on the line 4A B. Fig. 3 is a similarsectional view show- Fig. f

views showing modiiicationsin the mannery of connecting the side plates and gear-wheels. Fig. 8 is a longitudinal sectional elevation, full size, of one of theinternal pinions.

In a detail description of the invention similar reference characters indicate correspending parts in the several views of the drawings. Y A

The improved-dierential gear` comprises two shafts l and 2, placed in alinement, two `6o gear-wheels 3 and 4', secured to said shafts, and a driving member 5,1ooselysurronnding the hubs ofv and inclosed between the two gear-wheels 3 and 4. The driving member is provided with a peripheral braking-snrface 5. Plates 6 and 9 are secured to said driving member by suitable means, such as screws 8 and l1, which penetrate the sides of the band-periphery of said driving member. The said plates 6 and 9 are slightly off- 7o set, so as to engage the rim 5 of the driving member, and each of said plates is provided with driving or sprocket teeth on its outer periphery. At their inner peripheries the said plates 6 and 9 engage the outer rims of 75 the gear-wheels 3 and l by suitable flanges 7 and l0, so as to hold said gear-wheels in true alinement, and thereby close up against the driving member 5. It is obvious that these plates 6 and 9 may be of the same size and have 8o the same number of teeth; but in the drawings they are shown in graduated sizes or one'much larger than the other, so as to give Aa variation of speed from the driver through said various sizes of sprockets or drivingwheels. It is further obvious that these 'plates or sprockets 6 and 9 are interchangements.

Fig. 3 of the drawings illustrates the differential gear substantially the same as Fig. Ico 2, but minus the sprocket-ring l2 and flange 13. In this construction the plate 18 is substantially the same as plate 6, but is minus the sprocket-teeth, and slightly engaging the periphery is an overhanging edge 19. The internal pinions l5 and l5 preferably have solid spindle ends 16 and are madeof one integral piece, as shown in Fig. S. They may, however, have their spindles independent and separate. In either case the said pinions engage each other, as shown in Fig. 4, near their center portions, leaving the toothed ends free from engagement with each other, but adapted to engage |the gear-wheels 3 and 4 in such a manner that pinion 15 may en- `gage gear-wheelv 3 and pinion l5 may engagegear-wheel 4, thus causing a differential motion to the driving-shafts l and 2 when they travel at dierent speeds. The said pinions are mounted in pairs, having their spindles in planes parallel to the alined shafts 1 and 2 and their spindle ends mounted in the side plates 6 and 9.

In Fig. l the pinions 15 and 15' will beseen engaged with each other and engaging the gear-wheels 3 and 4, gear-Wheel 4 being hid fromview. The said pinions pass through openings 17 in the driving member 5, but are independent of said driving member.

It is obvious that the shafts 1 and2 may be a solid shaft in one piece, and to this one of said gear-wheels may be secured, and the other of said gear-wheels may be mountedron a tube or hub of said gear-wheel, or both gearwheels 3 and 4 may be mounted on sleeves.

InFigs. 6 and 7 I have shown some modiiications in the manner of connecting the inner peripheries of the side plates with the rims of the gear-wheels.

Having fully described my invention, I claim- 1. In a differential. gear, the combination of twoalined shafts, two gear-wheels mounted thereon, a, driving member havingan outer band-shaped periphery, said driving member being loosely mounted between said gearwheels, face-plates engaging the outer rim of each of said gear-wheels and detachably secured to thel outerband-shaped periphery of the driving member, one or both of said faceplates being provided With teeth, pinions engaging said gear wheels and projecting through openings in the driving member, said pinions being-mounted between the faceplates.

2. In a dierential gear, the combination with two alined shafts, of a driving member provided with a braking-surface, agear-wheel on eachside of said driving member, the inner ends of the hubs of said gear-wheels abutting with each other, engaging pinions lying Within the periphery of the driving member, and removable side plates carrying said pinions.

3. In a dierential gear, the combination with two alined shafts, of a driving member having a peripheral braking-surface and a web connecting the hub of said driving member and the said periphery, said web having openings therein, removable side plates secured to the edges of the periphery of said driving member, elongated pinions mounted in said side plates parallel with the two alined shafts and projected through the openings in the web of the driving member and spurwheels inclosed between said driving member and the side plates and engaged by said pinions.

4. In a differential gear, the combination of alined shafts, a driving member, removable side plates secured to said driving member, two or more pinions inclosed between said side plates, gear-wheels havinginwardlyprojectinghubs telescoping into the open center of the driving member and held in position by said side plates.

5. In a dieren'tial gear, the combination with alined shafts, of two gear-wheels on said shafts, pinions engaging said gear-wheels, an

annular band-shaped driving member inclosing said gear-wheels at their peripheries, a removable side plate on each side of said driving member in which the pinions are mounted, the said driving member having a central hub-shaped center inclosing the inner portions of the hubs of the gear-wheels.

6. In a dierential gear, the combination of two alined shafts, two gear-wheels mounted thereon side by side, a driving member having an outer annular band-shaped periphery and loosely mounted between said gearwheels, side plates engaging the-outer rim of each of said gear-wheels and detachably secured to said outer rim of said driving member, one or both of said plates provided with sprocket-teeth, pinionsV engaging said gear- Wheels and projecting through openings in the body of the drivingmember, said pinions being supported in the side plates.

7. Ina dierential gear, the combina-tion withv alined shafts, of gear-wheels mounted on said shafts side by side, side plates partially inelosing the outer sides of said gearwheels and engagingthesides thereof, a driving member between said gear-wheels terminating in an outer annular band-periphery towhich said plates-,are attachedone or both of said plates being providedwith drivingteeth, av series of pairs of pinions passing through said driving member, in gear with each other and inrgear with their respective gear-wheels, said pinions. mounted between said plates by spindle-bearings.

8. In a differential gearing, the combination with two alined shafts, and gear-wheels secured to the-adjacent endsof said shafts, of an integral driving member between said gear-wheels, the rim of said driving member projecting laterally on each side toa point approximately in line with the outer sides of the peripheries of said gear-wheels, side or face plates having their inner rims yprojected under the inner sides of the peripheries of said gear-wheels, andthe outer rims of said plates being projected over the outer periphery or rim of the driving member and termi- IOO IXO

hated in teeth, a series of pairs of pinions projected through said driving member, the said pinions having their spindle ends projected into said plates.

9. In a differential gear, the combination with two alined shafts, of a driving member, the periphery of which has a braking-surface, two independent side plates separated by the rim or periphery of said driving member, said side plates being attached to the edges of said rim or periphery, a gear-Wheel mounted on each side of said driving member, and pinions carried by said side plates and engaging the gear-Wheels, said pinions being essentially in positions parallel with the axis of the driving member.

l0. In a differential gear, the combination with two alined shafts, of a driving member having an annular periphery, the edges of which project laterally beyond the hub of said driving member, the outer surface of said periphery being coaxial with the two alined shafts to provide a braking-surface, two gear-wheels secured to the adjacent ends of the shafts and upon the hubs of which the driving member is mounted, one or more side plates attached to the circumferential edges in said side plates and engaging said gear-l Wheels.

In testimony whereof I aiiix my signature in presence of two witnesses.

Y HUGH L. WARNER. Witnesses:

R. J. MCGARTY, C. M. THEOBALD. 

